---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-155530"
form_type: "8-K"
ticker: "PKG"
cik: "0000075677"
company_name: "PACKAGING CORP OF AMERICA"
filed_at: "2025-07-03T23:59:59+00:00"
generated_at: "2026-05-18T09:33:11.471360+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# PCA agrees to acquire Greif's containerboard business for $1.8B cash

## Summary
- Purchase price of $1.8 billion in cash; expected closing in Q3 2025.
- Acquisition includes containerboard mills in Virginia and Ohio, and seven sheetfeeder facilities.
- Closing subject to HSR Act waiting period; termination fee payable by PCA in certain antitrust-related scenarios.
- Outside date for closing is June 30, 2026, subject to two 90-day extensions.

## SEC filing metadata
- accession: 0001193125-25-155530
- form_type: 8-K
- ticker: PKG
- cik: 0000075677
- company_name: PACKAGING CORP OF AMERICA
- filed_at: 2025-07-03T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/75677/000119312525155530/0001193125-25-155530-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/75677/000119312525155530/d92547d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-155530
- JSON: https://secwatch.observer/filing/0001193125-25-155530.json
- Plain text: https://secwatch.observer/filing/0001193125-25-155530.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.